CN201120686Y

CN201120686Y - Internal loose core apparatus of special plastic mold

Info

Publication number: CN201120686Y
Application number: CNU2007201923902U
Authority: CN
Inventors: 王正军
Original assignee: Individual
Current assignee: Individual
Priority date: 2007-10-30
Filing date: 2007-10-30
Publication date: 2008-09-24
Anticipated expiration: 2017-10-30

Abstract

Disclosed is a core-pulling device in a special plastic mould, which comprises a core and is characterized in that a main sliding block is arranged on the core; the main sliding block is connected with a main sliding block base; the main sliding block base is square and is connected with a main sliding block fixing plate; an auxiliary sliding block is matched with the main sliding block; the auxiliary sliding block is divided into a small part and a big part; the core-pulling device also comprises eight thimbles arranged in a thimble base; a spring is arranged on the thimbles; compared with the prior art, the core-pulling adopts the sliding block type core-pulling; the small sliding block and the big sliding block can act in a stagger way; the core can be pulled out when the mould is demolded without separating the mould from the core; thereby, the production period is shortened greatly; besides, a group of main sliding block and a group of auxiliary block are adopted to avoid the damage towards the product; the core-pulling device which has great reliability is an ideal core-pulling in the special plastic mould.

Description

A kind of special mould of plastics internal core withdrawing device

Technical field

The utility model relates to a kind of structure of loosing core of mould, particularly a kind of core-pulling device easily and fast that is used in the special mould of plastics.

Background technology

The structure of the plastic product on the existing market becomes increasingly complex, many plastic products all have inside groove, thereby require mould also have can this inside groove of injection moulding structure, this just requires to have a kind of structure that mould is extracted out that can be intact from inside groove, but thisly can extract mould quickly and easily out and have certain degree of difficulty, and this respect also is those skilled in the art's problem to be solved always, this structure of loosing core of the prior art is that core and plastic products are fused always, core is extracted out from mould with plastic products, again core is extracted out in plastic products, just complicated many on technology like this, also be unfavorable for producing in enormous quantities, this structure also is easy to allow plastic products crack or phenomenon such as distortion.

The utility model content

For solving the difficulty of loosing core in the prior art, the complicated problems of loosing core provides a kind of special mould of plastics internal core withdrawing device simple, good reliability of loosing core.

For addressing the above problem, special mould of plastics internal core withdrawing device of the present utility model, comprise a core, it is characterized in that: described have a master slider on core, a master slider and a master slider seat connect together, described master slider seat is square, described master slider seat connects a master slider fixed head, a described secondary slide block that matches with master slider in addition, described secondary slide block is divided small one and large one two parts, described every part on average is divided into the I-shaped slider guide of four band gradients, and the I-shaped slider guide of described each big band gradient matches with the I-shaped slider guide of each little band gradient; Described also have eight thimbles of I-shaped slider guide that withstand on the band gradient, and thimble is installed in the thimble seat, and described have a spring in addition on thimble, and described secondary slide block connects a secondary slide block fixed head.

Special mould of plastics internal core withdrawing device of the present utility model also comprises and has a following feature:

Described master slider has an endoporus, and one is matched on endoporus and the core, and close core fixing plate one end of the outer face of described master slider is a bullet, is being planar end surface near master slider fixed head one end, and is matching with secondary slide block fixed head;

Described bullet is divided into eight parts, and described every part all has an I-shaped guide runner that has gradient that matches with the I-shaped slider guide of band gradient;

Described secondary slide block the outer end be an optical axis that matches with the inside groove of product;

Described master slider and secondary slide block are square in the outer face of cooperation place.

Compared with prior art, core-pulling device of the present utility model, what adopt is that slide block type is loosed core, and the action that a big slide block and a fritter cunning can stagger can be extracted out when the mould depanning, need not separate mould and core, so just shortened the production cycle of product greatly, owing to adopted one group of master slider and one group of secondary slide block, therefore can not produce and damage in addition product, having very high reliability, is a kind of very desirable special mould of plastics internal core withdrawing device therefore.

Description of drawings

Below in conjunction with the drawings and specific embodiments special mould of plastics internal core withdrawing device of the present utility model is described further:

Fig. 1 is the exploded perspective view of special mould of plastics internal core withdrawing device of the present utility model;

Fig. 2 is the generalized section of special mould of plastics internal core withdrawing device of the present utility model;

Fig. 3 is the generalized section after special mould of plastics internal core withdrawing device of the present utility model is loosed core.

Among the figure:

1, core 3, master slider 30, master slider seat 4, master slider fixed head

5, secondary slide block 50, the big I-shaped slider guide of secondary slide block

51, secondary slide block unskilled labourer word slider guide 6, secondary slide block fixed head 7, spring

8, thimble 11, axle 15, optical axis 16, thimble seat

The specific embodiment

As shown in Figure 1, special mould of plastics internal core withdrawing device of the present utility model comprises a core 1, a master slider 3, a master slider fixed head 4, a spring 7, big I-shaped slider guide 50, one secondary slide block unskilled labourer word the slider guide 51 and one secondary slide block fixed head 6 of a thimble 8, one secondary slide block 5, one secondary slide block.

As shown in Figure 1 to Figure 3, one master slider 3 is arranged on the core 1, a master slider 3 and a master slider seat 30 connect together, master slider seat 30 is square, easier like this installation and location, master slider seat 30 connects a master slider fixed head 4, core 1 has an axle 11, axle 11 on the endoporus of master slider 3 and the core 1 matches, master slider 3 can slide as level by the axle 11 of its endoporus on core 1, close core end face one end in the outer face of master slider 3 is a bullet 31, bullet 31 is divided into eight parts, every part is an I-shaped guide runner that has a gradient, what match with the I-shaped guide runner that has gradient is secondary slide block 5, secondary slide block 5 is divided small one and large one two parts, every part on average is divided into the I-shaped slider guide of four band gradients, the I-shaped slider guide 51 of the I-shaped slider guide 50 of the band gradient that each is big and each little band gradient matches in the intersection, secondary big I-shaped slider guide 50 of slide block and secondary slide block unskilled labourer word slider guide 51 all match with the I-shaped guide runner that has gradient on the bullet 31, and can on the I-shaped guide runner that has gradient on the bullet 31, slide relatively, on big I-shaped slider guide 50 of secondary slide block and secondary slide block unskilled labourer word slider guide 51, also have eight thimbles 8, thimble 8 is installed in the thimble seat 16, have a spring 7 on thimble 8 in addition, an end of master slider 3 withstands on the end face of core 1; Secondary slide block 5 one ends withstand on the end face of core 1 with master slider 3, and the other end of secondary slide block 5 withstands on the end face of secondary slide block fixed head 6, the optical axis 15 of the excircle part of secondary slide block 5 for matching with the inside groove of product.Master slider 3 is square with secondary slide block 5 in the outer face of cooperation place, and doing like this is for the convenient installation and the location of mould.

The operation principle of special mould of plastics internal core withdrawing device of the present utility model is as follows:

As shown in Figure 2 to Figure 3, at product also on mould during injection moulding, as shown in Figure 2, secondary slide block 5 and master slider 3 withstand on the core 1 together, and allow the outer face of secondary slide block 5 and core 1 be consistent, just do not have dark striped like this on the goods, when also not loosing core, the cooperation of secondary slide block 5 and master slider 3 just forms the mould of a goods inside groove, and is the same with unitary mould of the prior art.In the time will dividing mould, when taking out product, as shown in Figure 2, in minute mold process, at first master slider fixed head 4 is separated from mould, because master slider fixed head 4 is fixed together with master slider 3 usefulness securing members, master slider 3 also follows master slider fixed head 4 to separate, in the separation process of master slider 3, because secondary slide block fixed head 6 is for fixing, and secondary slide block 5 has withstood on the secondary slide block fixed head 6, so this moment, master slider 3 will produce a relative motion with secondary slide block 5, on big I-shaped slider guide 50 of secondary slide block and secondary slide block unskilled labourer word slider guide 51, also have eight thimbles 8, thimble 8 is installed in the thimble seat 16, outside thimble 8, be provided with spring 7, the elastic force of spring 7 acts on the secondary slide block 5 at this moment, and secondary slide block 5 takes place in the relative motion process with master slider 3, all impel big I-shaped slider guide 50 of secondary slide block and secondary slide block unskilled labourer word slider guide 51 on the secondary slide block 5 inwardly to shrink by its I-shaped guide runner that has gradient elastic force that the gravity produced and spring 7 produced that slides, shrink one during when the big I-shaped slider guide 50 of the secondary slide block on the secondary slide block 5 and secondary slide block unskilled labourer word slider guide 51 like this to certain position, promptly the big I-shaped slider guide 50 of secondary slide block this moment has slided into the top, be that the slider head of the big I-shaped slider guide 50 of secondary slide block has withstood on the axle 11 on the core 1, can not slide again, and this moment since secondary slide block unskilled labourer word slider guide 51 under the I-shaped guide runner that is had gradient by it slides the effect of the elastic force that the gravity produced and spring 7 produced, still can slide, therefore just having formed the big I-shaped slider guide 50 of a secondary slide block slides into the top earlier, and slide into behind the secondary slide block unskilled labourer word slider guide 51 top situation, when secondary slide block unskilled labourer word slider guide 51 also not when sliding, promptly this moment secondary slide block 5 optical axis 15 external diameter less than or when equaling core 1, at this moment, mould just can not block the extraction of mould because of the inside groove of goods, can extract mould this moment fully out, and can not cause any damage or scuffing, thereby realize the complete mould of extracting out fast to product with inside groove to product itself.

, but should be understood that under the situation that does not break away from relevant protection domain defined by the claims that those skilled in the art can make change and/or revise according to embodiment of the present utility model describing the present invention property and nonrestrictive description.

Claims

1, a kind of special mould of plastics internal core withdrawing device, comprise a core, it is characterized in that: described have a master slider on core, a master slider and a master slider seat connect together, described master slider seat is square, described master slider seat connects a master slider fixed head, a described secondary slide block that matches with master slider in addition, described secondary slide block is divided small one and large one two parts, described every part on average is divided into the I-shaped slider guide of four band gradients, and the I-shaped slider guide of described each big band gradient matches with the I-shaped slider guide of each little band gradient; Described also have eight thimbles of I-shaped slider guide that withstand on the band gradient, and thimble is installed in the thimble seat, and described have a spring in addition on thimble, and described secondary slide block connects a secondary slide block fixed head.

2, special mould of plastics internal core withdrawing device according to claim 1, it is characterized in that: described master slider has an endoporus, one is matched on endoporus and the core, close core fixing plate one end of the outer face of described master slider is a bullet, be planar end surface near master slider fixed head one end, and matching with secondary slide block fixed head.

3, special mould of plastics internal core withdrawing device according to claim 2, it is characterized in that: described bullet is divided into eight parts, and described every part all has an I-shaped guide runner that has gradient that matches with the I-shaped slider guide of band gradient.

4, special mould of plastics internal core withdrawing device according to claim 3 is characterized in that: described secondary slide block the outer end be an optical axis that matches with the inside groove of product.

5, special mould of plastics internal core withdrawing device according to claim 4, it is characterized in that: described master slider and secondary slide block are square in the outer face of cooperation place.